<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>选择器权重</title>
		<!-- 选择器权重越高，选中几率越大 -->
		<style>
			*{/* 权值  0   很容易被覆盖*/
			   color: #ffaa00!imporant;
			   background: #55ffff!imporant;
			   /*!imporant 重要加紧急 如果用，导致代码难以维护*/
			   }
			div{/* 权值  1  */
			      color: #00ff00;
			      background: #ff557f;
			    }
		    .dl{/* 权值  10  */
		       color: #ff0000;
		       background: #aaff00;
		       }
			div.dl{/* 选择器权值之和   权值1+10=11*/
			   color: #55ff00;
			   background: #ff0000;
			   }
		    body div.dl{/* 权值  12*/
		       font-size: 25px;
			   color: #000000;
			   background: #ff0000;
		       }
		    #dl{/* 权值  100*/
			      font-size: 15px;
			      color: #aaaaff;
			      background: #aaff00;
			   }
			div#dl{/* 权值  101*/
			      font-size: 20px;
			      color: #51ff21;
			      background: #ff20bc;
			   }
			div#dl:hover{/* 权值  111*/
			      color: #aaaaff;
			      background: #aaff00;
			   }
		</style>
	</head>
	<body>
		<div class="dl" id="dl" style="color:red;">Lorem ipsum dolor sit amet consectetur adipisicing elit. Doloremque veritatis necessitatibus odit obcaecati vero vel facere porro soluta at dolor dolores accusamus cupiditate, tempora adipisci illum in. Consectetur, laboriosam delectus.</div>
	</body>
</html>